81991080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{11987}}^1$

素因数の和:12023

約数の個数: 96

約数和(自身を含む): 280519200

約数和(自身を除く): 198528120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 380, 456, 570, 684, 760, 855, 1140, 1368, 1710, 2280, 3420, 6840, 11987, 23974, 35961, 47948, 59935, 71922, 95896, 107883, 119870, 143844, 179805, 215766, 227753, 239740, 287688, 359610, 431532, 455506, 479480, 539415, 683259, 719220, 863064, 911012, 1078830, 1138765, 1366518, 1438440, 1822024, 2049777, 2157660, 2277530, 2733036, 3416295, 4099554, 4315320, 4555060, 5466072, 6832590, 8199108, 9110120, 10248885, 13665180, 16398216, 20497770, 27330360, 40995540, 81991080]

約数ペア:

[(1, 81991080), (2, 40995540), (3, 27330360), (4, 20497770), (5, 16398216), (6, 13665180), (8, 10248885), (9, 9110120), (10, 8199108), (12, 6832590), (15, 5466072), (18, 4555060), (19, 4315320), (20, 4099554), (24, 3416295), (30, 2733036), (36, 2277530), (38, 2157660), (40, 2049777), (45, 1822024), (57, 1438440), (60, 1366518), (72, 1138765), (76, 1078830), (90, 911012), (95, 863064), (114, 719220), (120, 683259), (152, 539415), (171, 479480), (180, 455506), (190, 431532), (228, 359610), (285, 287688), (342, 239740), (360, 227753), (380, 215766), (456, 179805), (570, 143844), (684, 119870), (760, 107883), (855, 95896), (1140, 71922), (1368, 59935), (1710, 47948), (2280, 35961), (3420, 23974), (6840, 11987)]